Fountain-pen.



J. E. SWARTHOUT.

FOUNTAIN PEN.

APPLIOATION FILED DEG. 29, '1911.

Patented Aug. 6, 1912.

Attorneys 6 {IN VEN T OR suction device for residing at Elmira,

Pens; and I do hereby declare the l to be a full, clear,

JAMES E. swARrHoUr, or ELMIRA, NEW YORK.

FOUNTAIN-PEN.

To all whom it may concern:

Be it known that I, JAMES E. SWARTHOUT, in the county of Che mung andState of New York, a citizen of the United States, have invented certainnew and useful Improvements in Fountain following and exact descriptionof the invention, such as will enable others skilled in the art to whichit pertains to make and use the same.

My invention relates to an improvement in fountain-pens, and moreparticularly to means for filling the reservoir of the pen with ink. I

It has for its object to provide a device which is capable of beingapplied to fountain-pens of various kinds to enable them to be filledwith ink without soiling the hands of the user or removing the pointsection or neck of the pen.

It also has for its object to provide ado; vice by means of which thepen may be inserting the end containing the pen into a suitablereceptacle containing ink and operating the piston.

It further has for its object to provide a filling the reservoir of thepen which is capable of being expanded to take up wear and fit thereservoin at all times and provide an air and liquid tight joint anddispense with all packing between it and the reservoir.

It still further has for its object to provide a device which. issimple, durable and inexpensive in construction, easy to operate andwhich when applied to any form of pen will not change or alter itsappearance.

The invention consists in the several features and the construction,combination and arrangement of said features as more fully hereinafter.described and claimed.

Referring, to the drawings:-Figure 1 is a sectional view of afountain-pen, partly in elevation, with my invention applied theretoshowing the position of the several parts when the piston is not in use..Fig. 2 is a similar view to Fig. 1 showing the po: sition of theseveral parts when the piston is in use. Fig. 3 is a detail side view ofthe piston .and piston rod. Fig. 4 is a detail fac'e view of the Fig. 5is a sectional view of a modified form of piston. Fig. 6 is a sectionalview of another modified form of piston.

In the drawings in which like numerals Specification of Letters Patent.I Application filed December 29, 1911.

- piston 'erably split member of the piston- Patented Aug. l6, 1912.Serial No. 668,563.

of reference denote like parts throughout the several views, 1represents the fountainpen which comprises a barrel or cylinder 2provided at one end 3 with a point section or neck 4 having a pen pointor nib 5 and the usual feeding connection 6, whichis not shown in detailas it may be of any well known construction. The opposite end 7 of thebarrel is provided with a hole 8 and a screwthreaded projection 9. Aninte-' riorlyscrewthreaded handle 10 is secured on the projection 9 andthe usual pen protecting cap 11 is provided which when the pen is in useis adapted to be inserted over the handle 10 and when the pen is not inuse is adapted to be inserted over the point section or neck 4. 1 l r Apiston rod 12 is provided, within the barrel 2, one end of which issecured in the lrole in the handle 10 in any desired manner, while theother end is provided with a head 13 which comprises a beveled portion14 and a screwthreaded portion 15 which tapers down to the piston rod at16. The comprises two annular ring-like members 17 and 18 one expansibleand the other non-expansible and both made prefof hard rubber or likematerial. The member 17 is designed to be mounted loosely on t e beveledportion 14 of the piston head 13 and has an interiorly' beveled surface19, said member 17 being split as shown at 20 for the purpose ofallowing it to be expanded or enlarged in circumference by the beveledportion 14 of the piston head to have-a spring action. The other member18 of the piston is provided with an interiorly screwthreaded surface 21designed to be screwed on to'the screwthreaded portion 15 of the pistonhead 13 and when ton rod is turned, in one direction, against the splitspring. member 17 and cause itto be expanded by the beveled portion 14of the head of the piston and hold it in its expanded position and forma tight joint between it and the interior surface of the barrel.

In the modifications shown in Figs. 5 and 6 the construction of the twoannular ringlike members 17 and 18 is the same as shown in Figs-1 to 4inclusive with the following to press exceptions :In Fig. 5 the member17 is provided with an annular recess 22 in its inner face and themember 18 is provided with an annular projection 23 on its inner face,designed to enter the recess 22 in the the .pis-

- enter the recess the position shown in Fig. 1, are

tion ofthe member 17 'themember '18 is member 17, and by means of thespring acassists in holdingfl or clamping said members together. In 1g 6the member 17 is provided with an annula-r beveled'recess 24 in itsinner face and provided with an annular its inner face, designed to atof the member 17, to assist in holding' or clamping said memberstogether.

In operation the several parts, being in caused to assume the positionsshown in full and dot-ted lines as shown in Fig. 2, by unscrew ing thehandle 10 from the projection 9, sliding thepiston rod outward androtating it until the beveled persona of the piston head engages withthe interiorly beveled surface 19 of the'member 17 and the interiorlyscrewthreaded portion 21 of the member 18 engages the screwt hreadedportion 15 of the piston head. Then by rotating the piston rod in onedirection the member 17 will be expanded and made to closely fit theinterior surface of the barrel 2 and by rotating the piston rod in theopposite direction projection 25 on the member 17 will be cont'ractedand in this manner, that is by the expansion and contraction of saidmember 17 ,a close air and liquid tight joint will always be maintainedbetween the piston and the barrel. The piston rod is then slid inward,as shown in dotted lines in Fig. 2, the pen point inserted in ink andthe piston rod slid outward which draws or sucks the ink into thebarrel. To return the several parts to their former positions the pistonrod is rotated untilthe head thereof is disengaged from the two pistonmembers 17 and 18 and is then slid inward and the handle 10 screwed ontothe projection 9 of the barrel.

I do not desireto be understood as'limit- Vance of said beve ing myselfto the specific details of construction and. arrangement as hereindescribed and illustrated, as it is manifest that variations andmodifications may be made in the features of construction andarrangement on the adaptation of the device to various conditions of usewithout departing from the spirit and scope of my invention and1mprovements. I therefore reserve the right to all such variations andmodifications as properly fall within the scope of my invention and theterms of the following claims.

What I claim is .1. In w-fountain pen, rod, beveled'at one endandthreaded in adedend, an expansible split member movably mounted on thepieton rod; and means cofiperating. with the threaded portionof thepiston vance the split member upouthe beveled a barrel, a piston rodtoadpart of the piston rod and thus cause it to be expanded, and to lockit in its various'advanced positions, substantially as'described.

2. In a fountain pen, rod, beveled at one end ahd threaded in advance ofsaid beveled end, an expansible split member movablymounted on the pieton rod and provided'with a recess, an

means cooperating with the threaded per a barrel, a piston tion of thepiston rod to advance the split r member upon the beveled part of thepiston rod and thus cause it to be expanded, and to lock it in itsvarious advanced positions, said means provided with a projectionadapted to engage the recess in the expans'n ble split member,substantially as described, In testimony whereof, I afiix my signaturein the-presence of twowitnesses.

JAJHES SWARTHOUE. Witnesses: 1

Gnonen F. FEAN, Cnorn C. Cnanmnns.

